/* ============================
   SHARED STYLES — Love Calculator Site
   ============================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --pink: #FF4F81;
  --pink-dark: #e0305f;
  --pink-light: #ff8fab;
  --rose-gold: #b76e79;
  --white: #ffffff;
  --cream: #fff5f7;
  --glass-bg: rgba(255,255,255,0.78);
  --glass-border: rgba(255,79,129,0.18);
  --text-dark: #2d1b2e;
  --text-mid: #5c3d4e;
  --text-light: #9e7080;
  --shadow-pink: rgba(255,79,129,0.22);
  --shadow-deep: rgba(45,27,46,0.13);
  --gradient-bg: linear-gradient(135deg, #ff9ab5 0%, #ff4f81 35%, #c94b87 65%, #8b3a7e 100%);
  --transition: all 0.32s cubic-bezier(0.4,0,0.2,1);
}

body.dark {
  --cream: #1a0d1a;
  --glass-bg: rgba(28,8,28,0.82);
  --glass-border: rgba(255,79,129,0.22);
  --text-dark: #f5e6ec;
  --text-mid: #d4a8b8;
  --text-light: #a0788a;
  --shadow-deep: rgba(0,0,0,0.4);
  --gradient-bg: linear-gradient(135deg,#3d0830 0%,#6b1a40 35%,#4a1060 65%,#1a0830 100%);
}

html { scroll-behavior: smooth; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--cream); color: var(--text-dark);
  min-height: 100vh; overflow-x: hidden;
  transition: background 0.38s, color 0.38s;
}

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--pink-light); border-radius: 10px; }

/* ── FLOATING HEARTS BG ── */
.hearts-bg { position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden; }
.heart-float {
  position: absolute; opacity: 0;
  animation: floatHeart linear infinite;
  will-change: transform, opacity;
  user-select: none;
}
@keyframes floatHeart {
  0%   { transform: translateY(100vh) rotate(0deg) scale(0.5); opacity: 0; }
  10%  { opacity: 0.5; }
  90%  { opacity: 0.2; }
  100% { transform: translateY(-120px) rotate(360deg) scale(1.1); opacity: 0; }
}

/* ── DARK TOGGLE ── */
.dark-toggle {
  width: 48px; height: 26px;
  background: var(--glass-bg); border: 1.5px solid var(--glass-border);
  border-radius: 50px; cursor: pointer;
  display: flex; align-items: center; padding: 3px;
  transition: var(--transition); backdrop-filter: blur(10px);
  flex-shrink: 0;
}
.dark-toggle-thumb {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--pink); transition: var(--transition);
  display: flex; align-items: center; justify-content: center; font-size: 10px;
  pointer-events: none;
}
body.dark .dark-toggle-thumb { transform: translateX(22px); }
.dark-toggle-thumb::after { content: '☀️'; }
body.dark .dark-toggle-thumb::after { content: '🌙'; }

/* ── NAVBAR ── */
.site-nav {
  position: sticky; top: 0; z-index: 200;
  background: rgba(255,255,255,0.92); backdrop-filter: blur(16px);
  border-bottom: 1.5px solid rgba(255,79,129,0.1);
  box-shadow: 0 2px 20px rgba(45,27,46,0.07);
  transition: background 0.38s;
}
body.dark .site-nav { background: rgba(26,8,26,0.92); border-bottom-color: rgba(255,79,129,0.2); }
.nav-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px; gap: 16px;
}
.nav-logo {
  display: flex; align-items: center; gap: 8px;
  font-size: 20px; font-weight: 800; color: var(--pink);
  text-decoration: none; white-space: nowrap;
}
.nav-logo-icon { font-size: 22px; animation: hb 1.6s ease-in-out infinite; }
@keyframes hb { 0%,100%{transform:scale(1)} 14%{transform:scale(1.28)} 28%{transform:scale(1)} 42%{transform:scale(1.15)} 56%{transform:scale(1)} }

.nav-links {
  display: flex; align-items: center; gap: 4px;
  list-style: none; flex-wrap: wrap;
}
.nav-links a {
  font-size: 14px; font-weight: 600; color: var(--text-mid);
  text-decoration: none; padding: 7px 13px; border-radius: 10px;
  transition: var(--transition); white-space: nowrap;
}
.nav-links a:hover { color: var(--pink); background: rgba(255,79,129,0.08); }
.nav-links a.active { color: var(--pink); background: rgba(255,79,129,0.1); }

.nav-right { display: flex; align-items: center; gap: 12px; }
.nav-cta {
  background: var(--pink); color: #fff; font-size: 13px; font-weight: 700;
  padding: 9px 20px; border-radius: 50px; text-decoration: none;
  transition: var(--transition); white-space: nowrap;
  box-shadow: 0 4px 14px var(--shadow-pink);
}
.nav-cta:hover { background: var(--pink-dark); transform: translateY(-1px); }

/* Mobile hamburger */
.nav-hamburger {
  display: none; background: none; border: none; cursor: pointer;
  flex-direction: column; gap: 5px; padding: 4px;
}
.nav-hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--pink); border-radius: 2px; transition: var(--transition);
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-mobile-menu {
  display: none; flex-direction: column; gap: 4px; padding: 12px 24px 16px;
  border-top: 1px solid var(--glass-border);
}
.nav-mobile-menu.open { display: flex; }
.nav-mobile-menu a {
  font-size: 15px; font-weight: 600; color: var(--text-mid);
  text-decoration: none; padding: 10px 14px; border-radius: 10px;
  transition: var(--transition);
}
.nav-mobile-menu a:hover, .nav-mobile-menu a.active { color: var(--pink); background: rgba(255,79,129,0.08); }

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .nav-cta { display: none; }
}

/* ── PAGE HERO ── */
.page-hero {
  background: var(--gradient-bg); padding: 64px 24px 70px;
  text-align: center; position: relative; overflow: hidden; z-index: 1;
}
.page-hero::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(255,255,255,0.1) 0%, transparent 55%);
  pointer-events: none;
}
.page-hero-content { position: relative; z-index: 2; max-width: 640px; margin: 0 auto; }
.page-hero-badge {
  display: inline-flex; align-items: center; gap: 7px;
  background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.3);
  color: #fff; font-size: 11px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase;
  padding: 5px 16px; border-radius: 50px; margin-bottom: 18px; backdrop-filter: blur(8px);
}
.page-hero h1 { font-size: clamp(30px,5vw,52px); font-weight: 800; color: #fff; line-height: 1.1; margin-bottom: 14px; text-shadow: 0 4px 20px rgba(0,0,0,0.18); }
.page-hero p { font-size: clamp(14px,2vw,17px); color: rgba(255,255,255,0.87); line-height: 1.65; }

/* Breadcrumb */
.breadcrumb {
  position: relative; z-index: 1; max-width: 1100px; margin: 18px auto 0;
  padding: 0 24px; display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--text-light);
}
.breadcrumb a { color: var(--pink); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb-sep { color: var(--text-light); opacity: 0.5; }

/* ── MAIN CONTENT ── */
.page-content { position: relative; z-index: 1; max-width: 860px; margin: 0 auto; padding: 40px 24px 80px; }

/* ── GLASS CARD ── */
.glass-card {
  background: var(--glass-bg); backdrop-filter: blur(20px);
  border: 1.5px solid var(--glass-border); border-radius: 24px;
  padding: 44px 48px; box-shadow: 0 8px 40px var(--shadow-deep);
  margin-bottom: 24px; transition: var(--transition);
}
.glass-card:hover { box-shadow: 0 14px 56px var(--shadow-deep); }
@media (max-width: 600px) { .glass-card { padding: 28px 20px; } }

/* Content typography */
.content-section { margin-bottom: 38px; }
.content-section:last-child { margin-bottom: 0; }
.content-section h2 {
  font-size: 22px; font-weight: 800; color: var(--text-dark);
  margin-bottom: 14px; display: flex; align-items: center; gap: 10px;
}
.content-section h2 .sec-icon { font-size: 20px; }
.content-section h3 { font-size: 17px; font-weight: 700; color: var(--text-dark); margin: 20px 0 8px; }
.content-section p { font-size: 15px; color: var(--text-mid); line-height: 1.82; margin-bottom: 12px; }
.content-section ul, .content-section ol { padding-left: 22px; margin-bottom: 12px; }
.content-section li { font-size: 15px; color: var(--text-mid); line-height: 1.75; margin-bottom: 6px; }
.content-divider { border: none; border-top: 1.5px solid rgba(255,79,129,0.12); margin: 32px 0; }
.highlight-box {
  background: linear-gradient(135deg, rgba(255,79,129,0.06), rgba(183,110,121,0.07));
  border: 1px solid rgba(255,79,129,0.15); border-left: 4px solid var(--pink);
  border-radius: 12px; padding: 18px 22px; margin: 18px 0;
  font-size: 14px; color: var(--text-mid); line-height: 1.75;
}
.tag-date { font-size: 12px; color: var(--text-light); font-weight: 600; letter-spacing: 0.5px; text-transform: uppercase; margin-bottom: 28px; display: block; }

/* ── FOOTER ── */
.site-footer {
  position: relative; z-index: 1;
  background: var(--gradient-bg); color: rgba(255,255,255,0.9);
  padding: 56px 24px 28px;
}
.footer-inner { max-width: 1100px; margin: 0 auto; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } }

.footer-brand {}
.footer-logo { font-size: 22px; font-weight: 800; color: #fff; display: flex; align-items: center; gap: 8px; margin-bottom: 12px; text-decoration: none; }
.footer-brand p { font-size: 13px; line-height: 1.7; color: rgba(255,255,255,0.72); margin-bottom: 20px; }
.footer-socials { display: flex; gap: 10px; }
.footer-social {
  width: 36px; height: 36px; border-radius: 10px;
  background: rgba(255,255,255,0.18); border: 1px solid rgba(255,255,255,0.25);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 15px; font-weight: 700; text-decoration: none;
  transition: var(--transition);
}
.footer-social:hover { background: rgba(255,255,255,0.32); transform: translateY(-2px); }

.footer-col h4 { font-size: 13px; font-weight: 800; letter-spacing: 1.5px; text-transform: uppercase; color: rgba(255,255,255,0.6); margin-bottom: 16px; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.footer-col ul a { font-size: 14px; color: rgba(255,255,255,0.85); text-decoration: none; transition: var(--transition); }
.footer-col ul a:hover { color: #fff; padding-left: 4px; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.15); padding-top: 22px;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-size: 13px; color: rgba(255,255,255,0.65);
}
.footer-bottom-links { display: flex; gap: 18px; flex-wrap: wrap; }
.footer-bottom-links a { color: rgba(255,255,255,0.7); text-decoration: none; transition: color 0.2s; }
.footer-bottom-links a:hover { color: #fff; }

/* ── TOAST ── */
.toast {
  position: fixed; bottom: 28px; left: 50%; transform: translateX(-50%) translateY(80px);
  background: var(--text-dark); color: #fff; padding: 12px 26px;
  border-radius: 50px; font-size: 14px; font-weight: 600; z-index: 1000;
  transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1), opacity 0.4s;
  opacity: 0; pointer-events: none; white-space: nowrap;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* ── BUTTONS ── */
.btn-pink {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, var(--pink) 0%, var(--pink-dark) 100%);
  color: #fff; font-size: 15px; font-weight: 700; padding: 14px 32px;
  border-radius: 50px; border: none; cursor: pointer; text-decoration: none;
  box-shadow: 0 6px 22px var(--shadow-pink); transition: var(--transition);
}
.btn-pink:hover { transform: translateY(-2px); box-shadow: 0 10px 30px var(--shadow-pink); }

.btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; color: var(--pink); font-size: 15px; font-weight: 700;
  padding: 13px 30px; border-radius: 50px; border: 2px solid var(--pink);
  cursor: pointer; text-decoration: none; transition: var(--transition);
}
.btn-outline:hover { background: var(--pink); color: #fff; }

/* ── SHARED SCRIPT STYLES ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}